Number

Special number

Special number

If the sum of the factorial of digits of a number (N) is equal to the number itself, the number (N) is called a special number.

  1. What are special 2 digit numbers?
  2. What is strong number?
  3. What is a special number in Python?
  4. What are the different types of special numbers?

What are special 2 digit numbers?

A special two-digit number is a number such that when the sum of the digits of the number is added to the product of its digits, the result is equal to the original two-digit number.

What is strong number?

Strong number is a special number whose sum of the factorial of digits is equal to the original number. For Example: 145 is strong number. Since, 1! + 4! + 5!

What is a special number in Python?

A special number is a number that is a positive integer having only 1 digit in its decimal representation.

What are the different types of special numbers?

Palindromic number -number having same digits forward and backward e.g. 121, 102201, 8523258 etc. Prime number -numbers which have on other divisors than 1 and itself . 2, 3, 5, 7, 11, 13, 17,.......... etc. are prime numbers.

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